Global Patent Index - EP 4057697 A4

EP 4057697 A4 20221130 - PACKET TRANSMISSION METHOD, COMMUNICATION DEVICE, AND COMMUNICATION SYSTEM

Title (en)

PACKET TRANSMISSION METHOD, COMMUNICATION DEVICE, AND COMMUNICATION SYSTEM

Title (de)

PAKETÜBERTRAGUNGSVERFAHREN, KOMMUNIKATIONSVORRICHTUNG UND KOMMUNIKATIONSSYSTEM

Title (fr)

PROCÉDÉ DE TRANSMISSION DE PAQUETS, DISPOSITIF DE COMMUNICATION ET SYSTÈME DE COMMUNICATION

Publication

EP 4057697 A4 20221130 (EN)

Application

EP 19953971 A 20191129

Priority

CN 2019122215 W 20191129

Abstract (en)

[origin: EP4057697A1] Embodiments of this application provide a packet transmission method, a communication apparatus, and a communication system. The packet transmission method includes: A target transport layer proxy network element establishes a fourth transport layer connection based on a first context of a source transport layer proxy network element, where the first context is a context about packet transmission of the source transport layer proxy network element on a first path. If the target transport layer proxy network element receives first indication information, and the first indication information is used to indicate that application context migration between a first application server and a second application server is completed, the target transport layer proxy network element performs transport layer processing on a packet on a second path based on a second context of the target transport layer proxy network element, and transmits, on the second path, a packet obtained through the transport layer processing. Through implementation of embodiments of this application, a packet loss can be avoided.

IPC 8 full level

H04W 36/12 (2009.01); H04L 67/148 (2022.01); H04W 36/16 (2009.01)

CPC (source: EP US)

H04L 45/655 (2022.05 - EP); H04L 63/0281 (2013.01 - US); H04L 63/166 (2013.01 - US); H04L 67/148 (2013.01 - EP US); H04L 69/14 (2013.01 - EP US); H04W 36/12 (2013.01 - EP); H04W 36/16 (2013.01 - EP); H04W 40/36 (2013.01 - EP)

Citation (search report)

  • [A] WO 2019027742 A1 20190207 - INTEL IP CORP [US]
  • [Y] HUAWEI ET AL: "Update to KI#3: Enhancement of Session Continuity during UE Mobility", vol. SA WG2, no. Newport Beach, USA; 20180528 - 20180601, 2 June 2018 (2018-06-02), XP051536022, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg%5Fsa/WG2%5FArch/TSGS2%5F127BIS%5FNewport%5FBeach/Docs/S2%2D185530%2Ezip> [retrieved on 20180602]
  • [Y] CATT: "Solution for KI3: Session continuity enhancement based on the coordination between AF and 5GC", vol. SA WG2, no. Sophia Antipolis, France; 20180820 - 20180824, 14 August 2018 (2018-08-14), XP051537130, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg%5Fsa/WG2%5FArch/TSGS2%5F128BIS%5FSophia%5FAntipolis/Docs/S2%2D188201%2Ezip> [retrieved on 20180814]
  • [A] HUAWEI ET AL: "Update to procedures to support service continuity in ULCL scenario", vol. SA WG2, no. ljubljana,slovenia; 20171023 - 20171027, 22 October 2017 (2017-10-22), XP051347376, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/Meetings_3GPP_SYNC/SA2/Docs/> [retrieved on 20171022]
  • [A] NEC: "Updates to solution #6", vol. SA WG2, no. Dongguan, P.R.China; 20181015 - 20181019, 18 October 2018 (2018-10-18), XP051540193, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg%5Fsa/WG2%5FArch/TSGS2%5F129%5FDongguan/Docs/S2%2D1811384%2Ezip> [retrieved on 20181018]
  • [A] ANONYMOUS: "3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Procedures for the 5G System (5GS); Stage 2 (Release 16)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 23.502, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. V16.2.0, 24 September 2019 (2019-09-24), pages 1 - 525, XP051784671
  • See references of WO 2021103016A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4057697 A1 20220914; EP 4057697 A4 20221130; CN 114731557 A 20220708; US 11722574 B2 20230808; US 2022294858 A1 20220915; US 2023421642 A1 20231228; WO 2021103016 A1 20210603

DOCDB simple family (application)

EP 19953971 A 20191129; CN 2019122215 W 20191129; CN 201980102285 A 20191129; US 202217827539 A 20220527; US 202318344655 A 20230629